Operation Manual
VigorAP 902 User’s Guide 
163
To improve this problem, Airtime Fairness is added for VigorAP 902. Airtime Fairness 
function tries to assign similar airtime to each station (A/B) by controlling TX traffic. In the 
following figure, Station B(11n) has higher probability to send data packets than Station 
A(11g). By this way, Station B(fast rate) gets fair airtime and it's speed is not limited by 
Station A(slow rate). 
It is similar to automatic Bandwidth Limit. The dynamic bandwidth limit of each station 
depends on instant active station number and airtime assignment. Please note that Airtime 
Fairness of 2.4GHz and 5GHz are independent. But stations of different SSIDs function 
together, because they all use the same wireless channel. IN SPECIFIC ENVIRONMENTS, 
this function can reduce the bad influence of slow wireless devices and improve the overall 
wireless performance. 
Suitable environment: 
(1) Many wireless stations. 
(2) All stations mainly use download traffic. 
(3) The performance bottleneck is wireless connection. 
Available settings are explained as follows: 
Item Description 
Enable Airtime 
Fairness 
Try to assign similar airtime to each wireless station by 
controlling TX traffic. 
Airtime Fairness – Click the link to display the following 
screen of airtime fairness note. 










